Display screen with a transitional graphical user interface



FIG. 1 is a first image of a display screen with a transitional graphical user interface showing our new design;

FIG. 2 is a second image thereof;

FIG. 3 is a third image thereof;

FIG. 4 is a fourth image thereof;

FIG. 5 is a fifth image thereof; and,

FIG. 6 is a sixth image thereof.

The outermost broken line boundary is for the purpose of illustrating the display screen and forms no part of the claimed design. Within the outermost boundary, the broken lines showing the outlined text and other portions of the graphical user interface are for the purpose of illustrating portions of the transitional graphical user interface that forms no part of the claimed design.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-6. The process or period that one image transitions to another image forms no part of the claimed design. 

CLAIM The ornamental design for a display screen with a transitional graphical user interface, as shown and described. 